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Home >> Toyota >> 2004 >> Matrix Base, FWD, Standard >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 128 (Engine Control System Self Diagnostics) >> Diagnostic Tests >> DTC P1600: Back-Up Power Source Circuit Malfunction >> Possible Causes
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Possible Causes

WARNING: This page is about a different car, the 2003 Toyota Matrix and 2003 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
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